Vending machine



FIG. 1 is a frontal view of a vending machine, showing my new design therefor;

FIG. 2 is a rear view of my new design for a vending machine;

FIG. 3 is a side view of my new design for a vending machine, showing the right side;

FIG. 4 is a side view of my new design for a vending machine, showing the left side;

FIG. 5 is a top plan view of my new design for a vending machine; and,

FIG. 6 is a bottom plan view of my new design for a vending machine. 

The ornamental design for a vending machine, as shown and described. 